1/*
  2 * Copyright (C) 2013 Red Hat
  3 * Author: Rob Clark <robdclark@gmail.com>
  4 *
  5 * This program is free software; you can redistribute it and/or modify it
  6 * under the terms of the GNU General Public License version 2 as published by
  7 * the Free Software Foundation.
  8 *
  9 * This program is distributed in the hope that it will be useful, but WITHOUT
 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 12 * more details.
 13 *
 14 * You should have received a copy of the GNU General Public License along with
 15 * this program.  If not, see <http://www.gnu.org/licenses/>.
 16 */
 17
 18#ifndef __MSM_GEM_H__
 19#define __MSM_GEM_H__
 20
 21#include <linux/reservation.h>
 22#include "msm_drv.h"
 23
 24struct msm_gem_object {
 25	struct drm_gem_object base;
 26
 27	uint32_t flags;
 28
 29	/* And object is either:
 30	 *  inactive - on priv->inactive_list
 31	 *  active   - on one one of the gpu's active_list..  well, at
 32	 *     least for now we don't have (I don't think) hw sync between
 33	 *     2d and 3d one devices which have both, meaning we need to
 34	 *     block on submit if a bo is already on other ring
 35	 *
 36	 */
 37	struct list_head mm_list;
 38	struct msm_gpu *gpu;     /* non-null if active */
 39	uint32_t read_fence, write_fence;
 40
 41	/* Transiently in the process of submit ioctl, objects associated
 42	 * with the submit are on submit->bo_list.. this only lasts for
 43	 * the duration of the ioctl, so one bo can never be on multiple
 44	 * submit lists.
 45	 */
 46	struct list_head submit_entry;
 47
 48	struct page **pages;
 49	struct sg_table *sgt;
 50	void *vaddr;
 51
 52	struct {
 53		// XXX
 54		uint32_t iova;
 55	} domain[NUM_DOMAINS];
 56
 57	/* normally (resv == &_resv) except for imported bo's */
 58	struct reservation_object *resv;
 59	struct reservation_object _resv;
 60
 61	/* For physically contiguous buffers.  Used when we don't have
 62	 * an IOMMU.
 63	 */
 64	struct drm_mm_node *vram_node;
 65};
 66#define to_msm_bo(x) container_of(x, struct msm_gem_object, base)
 67
 68static inline bool is_active(struct msm_gem_object *msm_obj)
 69{
 70	return msm_obj->gpu != NULL;
 71}
 72
 73#define MAX_CMDS 4
 74
 75/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
 76 * associated with the cmdstream submission for synchronization (and
 77 * make it easier to unwind when things go wrong, etc).  This only
 78 * lasts for the duration of the submit-ioctl.
 79 */
 80struct msm_gem_submit {
 81	struct drm_device *dev;
 82	struct msm_gpu *gpu;
 83	struct list_head bo_list;
 84	struct ww_acquire_ctx ticket;
 85	uint32_t fence;
 86	bool valid;
 87	unsigned int nr_cmds;
 88	unsigned int nr_bos;
 89	struct {
 90		uint32_t type;
 91		uint32_t size;  /* in dwords */
 92		uint32_t iova;
 93	} cmd[MAX_CMDS];
 94	struct {
 95		uint32_t flags;
 96		struct msm_gem_object *obj;
 97		uint32_t iova;
 98	} bos[0];
 99};
100
101#endif /* __MSM_GEM_H__ */